An assembly of devices designed to resect bones, tough tissues (e.g., cartilage, ligaments), and soft tissues during a surgical procedure; it is not dedicated to a specific clinical application. It includes a mains electricity (AC-powered) control unit which supplies low-voltage electricity, motors/handpieces/power tool attachments, and a variety of tools (e.g., drills, saws, burs, milling cutters, shavers, screwdriver bits, guide wires).